accordion is falsely assumed to be extremely complicated to play
because of the apparent complexity of what looks like a large number
of left hand buttons.
To the casual
observer the buttons all look the same, but the important thing is
what they feel like to the player, not what they look
like as the player cannot see them anyway..
In fact not
all buttons are used at a time - the selection depends on what key
you are in and this makes simple tunes with simple harmonies very easy to play on the accordion.
buttons are cleverly designed to have the notes and complete chords
you are going to use as close together as possible. in the left hand
this is not the same as them being next door notes.
are ones having similar numbers of sharps or flats as in the circle
of keys. For example a key with one flat (F) is similar to one to one
with no flats or sharps (C) which in turn is similar to G with its
chords are well known to work together and in the accordion buttons
they are placed close together.
line and the near-horizontal diagonal made by the buttons work like
the columns and rows of a spreadsheet.